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Finding the Fourth Proportional to 281,732.36, 388,789.88 and 152,674.42

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Solution

The fourth proportional to 281,732.36, 388,789.88 and 152,674.42 is: 210,690.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,732.36 : 388,789.88 = 152,674.42 : x
  2. Step 2: Convert to fraction form
    281,732.36/388,789.88 = 152,674.42/x
  3. Step 3: Cross multiply
    281,732.36x = 388,789.88 × 152,674.42
  4. Step 4: Simplify right side
    281,732.36x = 59,358,269,430.87
  5. Step 5: Solve for x
    x = 59,358,269,430.87/281,732.36
  6. Step 6: Final answer
    x = 210,690.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.